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Classifications

A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating

A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current

A61B18/14—Probes or electrodes therefor

A61B18/1442—Probes having pivoting end effectors, e.g. forceps

A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod

A—HUMAN NECESSITIES

A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE

A61B—DIAGNOSIS; SURGERY; IDENTIFICATION

A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body

A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating

A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current

A61B18/14—Probes or electrodes therefor

A61B18/1402—Probes for open surgery

A—HUMAN NECESSITIES

A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE

A61B—DIAGNOSIS; SURGERY; IDENTIFICATION

A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets

A61B17/28—Surgical forceps

A61B17/29—Forceps for use in minimally invasive surgery

A61B17/2909—Handles

A61B2017/2912—Handles transmission of forces to actuating rod or piston

A61B2017/2919—Handles transmission of forces to actuating rod or piston details of linkages or pivot points

A61B2017/292—Handles transmission of forces to actuating rod or piston details of linkages or pivot points connection of actuating rod to handle, e.g. ball end in recess

A—HUMAN NECESSITIES

A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE

A61B—DIAGNOSIS; SURGERY; IDENTIFICATION

A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets

A61B17/28—Surgical forceps

A61B17/29—Forceps for use in minimally invasive surgery

A61B2017/2926—Details of heads or jaws

A61B2017/2932—Transmission of forces to jaw members

A61B2017/2939—Details of linkages or pivot points

Abstract

The surgical device has a push and pull bar which, with the elbow joint components (24,27,29,31) of both arms (22,23) are of electrically conductive material. The first arm (22) is electrically conductively connected with its corresponding elbow joint (24). The second arm (23) is connected via an insulating part (35) with its corresponding elbow joint component (31). The second arm is electrically conductively connected with the tube shaft (7) via a pivot bearing (16). The first arm is rotatably located on the tube shaft electrically insulated in relation to the second arm and the tube shaft. Both arms are rotatably located on the tube shaft via a conductive bearing shaft and the first arm is electrically insulated in relation to this bearing shaft.

Besonders vorteilhaft ist es dabei, wenn die Isolier hülse Teil des Isolierteils ist, es ist nämlich dann nicht notwendig, hier ein zusätzliches Teil zur Isolie rung des ersten Arms gegenüber der Lagerwelle und damit gegenüber dem Rohrschaft vorzusehen. It is particularly advantageous, it is when the insulating sleeve is part of the insulating member, it is then not necessary namely, so here provide an additional member for Isolie tion of the first arm relative to the bearing shaft and with respect to the tubular shaft.

Vorzugsweise wird das Isolierteil aus Keramik herge stellt, es wäre aber auch möglich, das Isolierteil aus Kunststoff herzustellen. Preferably, the insulating ceramic is Herge provides, but it would also be possible to produce the insulating part made of plastic.

Bei einer bevorzugten Ausführungsform ist vorgesehen, daß das Isolierteil plattenförmig ausgebildet ist und im Schwenklagebereich zwischen dem zweiten Arm und dem zugeordneten Kniehebelelement in Längsrichtung sand wichartig eingebettet ist. In a preferred embodiment it is provided that the insulating part is plate-shaped and sand in the pivoting position the range between the second arm and the associated elbow lever element in the longitudinal direction is more like embedded.Man erhält also in Richtung der Schwenkachse gesehen einen dreilagigen Aufbau Knie hebelelement/Isolierteil/zweiter Arm. is thus obtained in the direction of the pivoting axis seen a three-layer structure rocker element / insulating / second arm.

Dabei ist es vorteilhaft, wenn das Isolierteil an dem Kniehebelelement einerseits und an dem zweiten Arm an dererseits über Stirnflächen flächig anliegt. It is advantageous if the insulating part lies flat against the rocker element on the one hand and on the second arm on the other hand, on the end faces.Über die se Stirnfläche können Drehmomente von dem Kniehebelele ment auf den zweiten Arm übertragen werden. On the se face torques of the Kniehebelele can be transferred management to the second arm.

Das Rohr 1 ist über einen Steckanschluß 6 mit dem er sten Pol einer in der Zeichnung nicht dargestellten Hochfrequenzspannungsquelle verbindbar, ebenso kann die Schub- und Zugstange 5 über eine in der Zeichnung nicht erkennbare Verbindung mit dem anderen Pol dieser Hoch frequenzspannungsquelle verbunden werden. The tube 1 is connected via a plug-in connection 6 with which it most pole of a high frequency power source not shown in the drawing connected, as is the push-pull rod 5 can be connected via a not visible in the drawing connected to the other pole of this high frequency power source.

Double-jointed instrument for surgical applications has two distal branches insulated against each other with at least one branch in area between first and second joints consisting of electrically insulated components

Citations (3)

Endoscopic instrument for minimal invasive surgery with tube and operating mechanism - has operating mechanism arranged at rear end of tube and has working mechanism, e.g. jaws working together arranged at tube front end also transmission mechanism

Endoscopic instrument for minimal invasive surgery with tube and operating mechanism - has operating mechanism arranged at rear end of tube and has working mechanism, e.g. jaws working together arranged at tube front end also transmission mechanism

Double-jointed instrument for surgical applications has two distal branches insulated against each other with at least one branch in area between first and second joints consisting of electrically insulated components